[ci skip] Cleanup events (#10202)

patches/api/LootTable-API.patch

@@ -199,11 +199,17 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +import org.bukkit.event.Cancellable;
 +import org.bukkit.event.HandlerList;
 +import org.bukkit.event.player.PlayerEvent;
++import org.jetbrains.annotations.ApiStatus;
 +import org.jetbrains.annotations.NotNull;
 +
 +public class LootableInventoryReplenishEvent extends PlayerEvent implements Cancellable {
-+    @NotNull private final LootableInventory inventory;
 +
++    private static final HandlerList HANDLER_LIST = new HandlerList();
++
++    @NotNull private final LootableInventory inventory;
++    private boolean cancelled;
++
++    @ApiStatus.Internal
 +    public LootableInventoryReplenishEvent(@NotNull Player player, @NotNull LootableInventory inventory) {
 +        super(player);
 +        this.inventory = inventory;
@@ -211,31 +217,27 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +
 +    @NotNull
 +    public LootableInventory getInventory() {
-+        return inventory;
++        return this.inventory;
 +    }
 +
-+    private static final HandlerList handlers = new HandlerList();
-+
-+    @NotNull
-+    public HandlerList getHandlers() {
-+        return handlers;
-+    }
-+
-+    @NotNull
-+    public static HandlerList getHandlerList() {
-+        return handlers;
-+    }
-+
-+    private boolean cancelled = false;
-+
 +    @Override
 +    public boolean isCancelled() {
-+        return cancelled;
++        return this.cancelled;
 +    }
 +
 +    @Override
 +    public void setCancelled(boolean cancel) {
-+        cancelled = cancel;
++        this.cancelled = cancel;
++    }
++
++    @NotNull
++    public HandlerList getHandlers() {
++        return HANDLER_LIST;
++    }
++
++    @NotNull
++    public static HandlerList getHandlerList() {
++        return HANDLER_LIST;
 +    }
 +}
 diff --git a/src/main/java/org/bukkit/block/Barrel.java b/src/main/java/org/bukkit/block/Barrel.java